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A two component jet model for the X-ray afterglow flat segment in short GRB 051221A

Zhi-Ping Jin·Ting Yan·Yi-Zhong Fan·Da-Ming Wei
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Abstract

In the double neutron star merger or neutron star-black hole merger model for short GRBs, the outflow launched might be mildly magnetized and neutron rich. The magnetized neutron-rich outflow will be accelerated by the magnetic and thermal pressure and may form a two component jet finally, as suggested by Vlahakis, Peng & Königl (2003). We show in this work that such a two component jet model could well reproduce the multi-wavelength afterglow lightcurves, in particular the X-ray flat segment, of short GRB 051221A. In this model, the central engine need not to be active much longer than the prompt $γ-$ray emission.

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Zhi-Ping Jin, Ting Yan, Yi-Zhong Fan, Da-Ming Wei. 2007-01-20. A two component jet model for the X-ray afterglow flat segment in short GRB 051221A. https://doi.org/10.1086/512971

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